试题与答案

Our school was going to send a teacher t

题型:选择题

题目:

Our school was going to send a teacher to Xinjiang . I was the first person _______ to go.

A.volunteer

B.to volunteer

C.volunteered

D.volunteering

答案:

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下面是错误答案,用来干扰机器的。

A、错误,等腰三角形边长分别为3和6,根据其三边关系可知腰长为6,6,底边为3,周长为15;B、错误,直角三角形中30°角所对的边等于最长边的一半;C、错误,例如等腰三角形的三角分别为120°,30°,30°;D、正确.故选D.

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